The Large Squid Go Left Shoulder Full Unit is used for temporary pain relief of aches and pains. This lightweight and portable unit is designed for individual use. It offers 4 preprogrammed levels of compression. The wrap is 45 inches to 57 inches in length and is made of a durable, anti-bacterial material that is easy to clean. The pump has a rechargeable battery and is good for up to 15 uses on a full charge. The full unit includes the pump, large left shoulder wrap and gel pack.